大约有 40,000 项符合查询结果（耗时：0.0743秒） [XML]
Iterate through the fields of a struct in Go
...
The closest you can achieve in go is GetValue() interface{} and this is exactly what reflect.Value.Interface()
offers.
The following code illustrates how to get the values of each exported field in a struct
using reflection (play):
import (
"fmt"
"reflect"
)
func main() {
x := struc...
What's the best way of structuring data on firebase?
... opposed to RDBMS, is that it's tempting to nest data because we can. Generally, you want to normalize data to some extent (just as you would do with SQL) despite the lack of join statements and queries.
You also want to denormalize in places where read efficiency is a concern. This is a technique...
What's the best way to check if a file exists in C?
...
There are pitfalls associated with access(). There is a TOCTOU (time of check, time of use) window of vulnerability between using access() and whatever else you do afterwards. [...to be continued...]
– Jonathan Leff...
How to do a join in linq to sql with method syntax?
I have seen lots of examples in LINQ to SQL examples on how to do a join in query syntax but I am wondering how to do it with method syntax? For example how might I do the following
...
bash/fish command to print absolute path to a file
...nd may not be present in every system by default, i.e. you may need to install it. In Debian it resides in a separate package with the same name.
– Roman Cheplyaka
Oct 12 '10 at 17:22
...
Should I pass a shared_ptr by reference? [duplicate]
...mber of bugs arise from improper lifetime management. What's worse conceptually is that it is never clear who owns the objects whose pointers the container stores. The pointers could even be a mix of pointers to dynamic objects, automatic objects, and garbage. Nobody can tell. So the standard soluti...
Correct format specifier for double in printf
...).
Note that this is one place that printf format strings differ substantially from scanf (and fscanf, etc.) format strings. For output, you're passing a value, which will be promoted from float to double when passed as a variadic parameter. For input you're passing a pointer, which is not promoted...
How do popular apps authenticate user requests from their mobile app to their server?
...I imagine they use a "token" based security system, so the password is actually never stored anywhere, just used the first time to authenticate. So the app initially posts the username/password (over ssl) and the server returns a token that the app stores. For subsequent sync attempts the token is s...
WPF Timer Like C# Timer
...imer
{
public event Action<thread::SynchronizationContext> TaskAsyncTick;
public event Action Tick;
public event Action AsyncTick;
public int Interval { get; set; } = 1;
private bool canceled = false;
private bool canceling = false;
...
Extracting Nupkg files using command line
Firstly, I do not want to use Visual Studio at all when dealing with the certain .nupkg files.
6 Answers
...